CSV to Array of Maps ( JSON ready ) Groovy

// input can be CSV in  Text, File, anything

def getLHMapFromCSV(fis) {
  def data = fis.readLines()
  def headers = data.take(1)[0].split(',').collect{it.trim().toLowerCase()}.withIndex(0).collectEntries{i,p -> [(p):i]}
  data.drop(1).collect{it.split(',').collect{it}.withIndex(0).collectEntries{i,p -> [(headers[p]):i]}}
}